Tips on using Intel MKL for BLAS/LAPACK?

[Dustin Lang]

Hi,

I'm trying to using MKL via:

cmake ../ceres-solver-1.8.0 \
-DBLAS_LIBRARIES="${MKL_LIBDIR}/libmkl_intel_lp64.a,${MKL_LIBDIR}/libmkl_sequential.a,${MKL_LIBDIR}/libmkl_core.a" \
-DLAPACK_LIBRARIES="${MKL_LIBDIR}/libmkl_intel_lp64.a,${MKL_LIBDIR}/libmkl_sequential.a,${MKL_LIBDIR}/libmkl_core.a" \
...

I also tried space-separating them.  cmake runs, and make runs until:

> make
make[2]: *** No rule to make target `/usr/common/usg/intel/composer_xe_2011_sp1.9.293/mkl/lib/intel64/libmkl_intel_lp64.a,/usr/common/usg/intel/composer_xe_2011_sp1.9.293/mkl/lib/intel64/libmkl_sequential.a,/usr/common/usg/intel/composer_xe_2011_sp1.9.293/mkl/lib/intel64/libmkl_core.a', needed by `lib/libceres.so.1.8.0'.  Stop.

It looks like the makefile is assuming a single file, while I need (apparently) to specify the three libraries.

Am I specifying the lib incorrectly, or is this a bug?

Thanks,
--dustin

[Sameer Agarwal]

Dustin,

There should be an easier way to do this. We use FindLAPACK.cmake and FindBLAS.cmake scripts that ship with cmake. These scripts handle Intel MKL correctly. You should not have to specify the individual library files by hand.

Alex can say more?

Sameer

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[Dustin Lang]

Huh, well now I feel dumb... It appears that IF you have MKL in your LD_LIBRARY_PATH and ATLAS NOT in your LD_LIBRARY_PATH, FindLAPACK and FindBLAS just do the right thing without specify ANYTHING on the command-line, and ceres builds fine.  Mystical.

Thanks / apologies for the noise.

--dustin